Pooled Analysis of S-1 Trials in Non-Small Cell Lung Cancer According to Histological Type- S8 y2 s3 w7 e% ]" k
NOBUYUKI YAMAMOTO1, TAKEHARU YAMANAKA2, YUKITO ICHINOSE3, KAORU KUBOTA4, HIROSHI SAKAI5, AKIHIKO GEMMA6, NAGAHIRO SAIJO7, MASAHIRO FUKUOKA8 and HISANOBU NIITANI9 * A- P1 k9 F' _, B6 c9 ]3 Z
+ Author Affiliations% b* o) i' @% y' T. T
- K( A0 v! {. p- \7 N y
1Division of Thoracic Oncology, Shizuoka Cancer Center, Shizuoka 411-8777, Japan / Y7 \8 q: u. q# q
2Cancer Biostatistics Laboratory, Institute for Clinical Research, National Kyushu Cancer Center, Fukuoka 811-1395, Japan 0 d2 I1 {( p P9 y
3Department of Thoracic Oncology, National Kyushu Cancer Center, Fukuoka 811-1395, Japan . m* w' b, Y& w5 [) O, d2 w
4Division of Thoracic Oncology, National Cancer Center Hospital, Tokyo 104-0045, Japan / R/ f- S3 U! \$ Z6 `
5Division of Thoracic Oncology, Saitama Cancer Center, Saitama 362-0806, Japan
( k d/ `( Y2 ^3 A6Division of Pulmonary Medicine, Infectious Diseases, and Oncology Department of Internal Medicine, Nippon Medical School, Tokyo 113-8603, Japan ' L6 ?9 _2 p0 ], t# s/ t
7Kinki University School of Medicine, Osaka 589-8511, Japan ! Q* l+ ^# d) c4 W% `: f
8Izumi Municipal Hospital, Osaka 594-0071, Japan ! D* y' u# w) f' F% _9 b% K; [+ i
9Tokyo Cooperative Oncology Group, Tokyo 105-0013, Japan 0 X7 j7 P, M5 Z7 I, Q9 j H8 b. g
Correspondence to: Nobuyuki Yamamoto, Division of Thoracic Oncology, Shizuoka Cancer Center, 1007 Shimonagakubo, Nagaizumi-cho, Sunto-gun, Shizuoka 411-8777, Japan. Tel: +81 559895222, Fax: +81 559895783, e-mail: n.yamamoto@scchr.jp
% E7 c. j- q. P9 r# @1 dAbstractBackground: The antimetabolic agent S-1 inhibits thymidylate synthase similar to pemetrexed, but through a different mechanism of action. Whether the antitumour activity of S-1 depends on histological type remains unclear. We analysed pooled data from 2 phase II clinical studies of cisplatin and S-1 in patients with previously untreated advanced non-small cell lung cancer. Patients and Methods: We comprised 110 patients with stage IIIB or IV non–small cell lung cancer. Univariate and multivariate analyses were performed to determine the effects of histological type on progression-free survival and response rates. Results: On pooled analysis of the data, according to histological type, median progression-free survival was 3.8 months in patients with squamous cell carcinoma and 4.4 months in those with non-squamous cell carcinoma. Both analyses showed that progression-free survival and response rate did not differ significantly. Conclusion: Unlike molecular targeted agents and pemetrexed, a combination of cisplatin and S-1 may be no difference in response according to histological type. + z$ }- x6 R3 |7 l* H
9 e4 v; g) D5 \% U
|